Dogtra ARC-X Add-on Collar Feature_HeavyDuty and Advanced XPP vibration as

and Advanced XPP vibration as the collar in the main kit

There's plenty  of air circulation and thanks to the double-hinged door

Six flat sides offer dogs easier grip & hold

This small winger can be stored along the back seat of most compact cars and SUVs

Dogtra ARC-X Add-on Collar Feature_HeavyDuty and Advanced XPP vibration asThe Dogtra ARC X Additional Receiver expands any ARC X system to a second or third dog from the same transmitter the same 2. 75 oz ergo curve receiver, IPX9K waterproof, 100 medium output stimulation levels, LED locate light, and Advanced XPP vibration as the collar in the main kit. No compromise in performance between the primary dog and any dog you add. And because the ARC X is part of Dogtra's X Series, this receiver is also cross compatible with